Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 280mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ50 mm
- Stroke280 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S
The AirTAC SAIJ50X280-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that provides a 180-280 mm usable travel window from its 280 mm nominal stroke. Delivering 982 N of push force at 0.5 MPa, it handles robust workholding and changeover tasks. The extruded aluminum barrel includes sensor grooves on both sides, and this variant integrates a magnet for CMSE reed and DMSE solid-state switches.
This configuration uses an SUS420J2 stainless steel rod (code A) for improved corrosion resistance and features PT tapered port threads. The rear adjuster functions as a mechanical stop to dial in end positions during commissioning without adding external stops. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 280 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×280 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S Is Used
Variable End-Stop Tuning
Dial in the retract position within the 180-280 mm window during machine setup to accommodate varying product lengths without external stopper blocks.
Corrosive Workholding
Leverage the SUS420J2 stainless steel rod and 982 N push force to securely clamp parts in environments where standard carbon steel rods might face moisture or contamination.
Changeover Commissioning
Quickly fine-tune the travel end-point during line changeovers, using the rear screw to set the exact stroke distance required for new component dimensions.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S the Right Cylinder?
Choose this 50 mm bore when you need more force than a 40 mm bore provides (628 N push at 0.5 MPa), but want to avoid the bulk of a 63 mm cylinder. The 100 mm adjustment window is ideal for product-size changeovers, allowing you to shift the retract end-stop without swapping the cylinder. Because the rear adjuster only sets travel limits and the air cushions decelerate the load, this cylinder cannot hold position without live air; for fail-safe load holding, consider an SAIL or BSAI cylinder. As a 280 mm stroke exceeds the 300 mm threshold, ensure external guides are used to prevent rod side-loading and premature wear. This unit is dimensionally interchangeable with ISO 15552 cylinders via its 50 mm bore, 280 mm stroke, PT ports, and -S magnet.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX280-100S FAQ
At a 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf.
The rear adjuster acts as a mechanical stop that lets you shorten the effective travel by up to 100 mm, creating a usable 180-280 mm stroke window. It allows precise end-position tuning during commissioning without replacing the cylinder.
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